US4202073A - Moisture stripping device for film cleaning apparatus - Google Patents

Moisture stripping device for film cleaning apparatus Download PDF

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Publication number
US4202073A
US4202073A US05/927,751 US92775178A US4202073A US 4202073 A US4202073 A US 4202073A US 92775178 A US92775178 A US 92775178A US 4202073 A US4202073 A US 4202073A
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US
United States
Prior art keywords
film
slot
moisture
air
stripping device
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US05/927,751
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English (en)
Inventor
Richard J. Hughes
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
RESEARCH Tech Inc
Original Assignee
RESEARCH Tech Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by RESEARCH Tech Inc filed Critical RESEARCH Tech Inc
Priority to US05/927,751 priority Critical patent/US4202073A/en
Priority to CA000330251A priority patent/CA1121114A/fr
Priority to GB7922311A priority patent/GB2026667B/en
Priority to DE2927137A priority patent/DE2927137B2/de
Priority to JP9417179A priority patent/JPS5518698A/ja
Application granted granted Critical
Publication of US4202073A publication Critical patent/US4202073A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F26—DRYING
    • F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
    • F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
    • F26B13/24—Arrangements of devices using drying processes not involving heating
    • F26B13/28—Arrangements of devices using drying processes not involving heating for applying pressure; for brushing; for wiping

Definitions

  • the above dryer uses a high volume, high pressure air system and creates a spray of solvent.
  • the present invention is a low pressure, low air volume and is a highly efficient air nozzle which truly non-evaporatively removes the solvent from the film surface without a spraying effect.
  • the field of art to which this invention pertains is dryers for film cleaning machines and in particular to dryers using air pressure as a means for stripping cleaning solvent from the surface of the film.
  • FIG. 1 is a diagrammatic illustration of a film cleaning apparatus according to the present invention.
  • FIG. 2 is an enlarged view of a split block air nozzle according to the present invention and showing the film slot and the air pressure openings which conduct air pressure to both sides of the film.
  • FIG. 3 is a sectioned view of the air nozzle of FIG. 2 taken along the lines III--III.
  • the moisture stripping air nozzle of the present invention is useable in a film cleaning apparatus in which darkened or soiled photographic motion picture film is unreeled at a high speed through a cleaning solvent, dried and then wound on a take-up reel.
  • a cleaning solvent is energized by ultrasonic devices which loosen the dirt from the surface of the film and washes it into the solvent.
  • the next step in the process is drying, where most vapors tend to be created. It is at this point that the solvent which adheres to the film by surface tension is removed from the film.
  • Heat drying mechanisms vaporize the greatest amount of solvent resulting in the greatest amount of waste.
  • Other types of devices utilize high speed air to overcome the surface tension of the liquid and literally tear the liquid from the film.
  • Such systems are shown in U.S. Pat. No. 2,967,119 and tend to generate a spray as the liquid is being torn from the surface of the film. This spray results from the use of high pressure and high volume air. Much less evaporation occurs in this system, however, there is still associated evaporation due to the spray effect of the solvent and the high air volume exposed to that spray.
  • the present invention utilizes an air nozzle which creates a moisture barrier at the region of entry of a photographic film into a slot formed in the nozzle.
  • This moisture barrier removes cleaning solvent from the film.
  • the air nozzle consists of a block containing a film slot which is only slightly wider than the thickness of the film. Air jets are directed into the slot from both sides thereof and when the film is positioned in the slot the air jets are directed toward opposite sides of the film. These air jets provide a cushion of air for both surfaces of the film and allow the film to be moved at high speeds without touching either side of the slot. This cushion is uniform across the surface of the film due to the provision for a relatively large air pressure drop across air holes which develop the air jets.
  • the air exits from both ends of the slot and the lower extremity thereof has sharp edges which cause the outrushing air to create a moisture barrier on the film slightly below the region of entry of the film into the slot.
  • FIG. 1 shows a diagrammatical view of the basic elements of a moisture stripping apparatus of the present invention.
  • a supply reel 10 contains a soiled film to be cleaned.
  • the film is unreeled over sprocket wheels 11 and 12 and enters a cleaning solvent 13 which is contained within a tank 17.
  • the solvent is energized by ultrasonic devices 14 and 15, and a sprocket wheel 16 keeps the film near the bottom of the tank 17.
  • the film leaves the solvent at a point 18 and passes directly to a moisture stripping device 19 for removing cleaning solvent adhered to the film by surface tension. From the device 19, film passes to a further sprocket wheel 20 and finally to a take-up reel 21.
  • the cleaning solvent is stripped from the film at a point 22 which is immediately below the region of entry of the film into the moisture stripping device 19.
  • the moisture stripping device 19 is shown in greater detail in FIG. 2 and is essentially an air nozzle which is formed by the mating of a pair of split blocks 23 and 24.
  • the block 23 has an air distribution path 25 which is connected to an air line 26.
  • the line 26 is in turn connected to a source of air pressure 27 as shown in FIG. 3.
  • the distribution path 25 is coupled to a plurality of air jets such as 28, 29 and 30 which are directed toward a slot 31 at the abutting sides of the blocks 23 and 24.
  • the block 24 has a distribution path 32 coupling to a plurality of air jets 33, 34 and 35 which direct air into the slot 31.
  • the slot 31 is formed by a recess 36 of block 23 and a like recess 37 of block 24.
  • Each recess in the preferred embodiment has a depth of about 0.005" making the slot width 0.010".
  • Thickness of a film 38 which is positioned within the slot is approximately 0.0065". Accordingly, there is very little space between the sides of the film and the adjacent sides of the recesses 36 and 37. As the film is moved through the slot, it is important that it not touch the surface of the blocks for this would scratch or seriously damage the film. This close tolerance between film and slot is made possible by an air cushion on both sides of the film between the film and the sides of the slot.
  • This air cushion is made uniform across the surface of the film 28 by maintaining a relatively large pressure drop across the air holes or jets 28, 29 and 30. In this way, a uniform pressure head is maintained in the air distribution path 25 resulting in uniform pressure at the outlet side of the air jets 28, 29 and 30. It is this uniform pressure that keeps the film from touching the surface of the blocks.
  • the solvent which is carried on the surface of the film by its surface tension is literally peeled from the surface of the film at a region 39 immediately below the bottom edge 40 of the air nozzle.
  • the lower edge of the slot such as at 41 is kept very sharp. It has been found that this sharp edge improves the moisture barrier 39.
  • the width of the slot may vary depending upon air pressure and thickness of film, however, the advantages of this invention are achievable in a device such as shown in FIGS. 2 and 3 with a slot spacing of 0.010" and an air pressure as low as 20 psi. Therefore, this moisture barrier is developed at very low pressures and very low rates of air flow and creates the stripping of solvent with minimum evaporation.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
  • Drying Of Solid Materials (AREA)
  • Coating Apparatus (AREA)
US05/927,751 1978-07-25 1978-07-25 Moisture stripping device for film cleaning apparatus Expired - Lifetime US4202073A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
US05/927,751 US4202073A (en) 1978-07-25 1978-07-25 Moisture stripping device for film cleaning apparatus
CA000330251A CA1121114A (fr) 1978-07-25 1979-06-21 Dispositif de raclage pour assecher la pellicule cinematographique en defilement
GB7922311A GB2026667B (en) 1978-07-25 1979-06-27 Moisture stripping device for film cleaning apparatus
DE2927137A DE2927137B2 (de) 1978-07-25 1979-07-05 Vorrichtung zum Abstreifen von Flüssigkeit von einem laufenden Filmstreifen mittels Druckluft
JP9417179A JPS5518698A (en) 1978-07-25 1979-07-24 Water remover for film cleaning equipment

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US05/927,751 US4202073A (en) 1978-07-25 1978-07-25 Moisture stripping device for film cleaning apparatus

Publications (1)

Publication Number Publication Date
US4202073A true US4202073A (en) 1980-05-13

Family

ID=25455197

Family Applications (1)

Application Number Title Priority Date Filing Date
US05/927,751 Expired - Lifetime US4202073A (en) 1978-07-25 1978-07-25 Moisture stripping device for film cleaning apparatus

Country Status (5)

Country Link
US (1) US4202073A (fr)
JP (1) JPS5518698A (fr)
CA (1) CA1121114A (fr)
DE (1) DE2927137B2 (fr)
GB (1) GB2026667B (fr)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244078A (en) * 1979-04-26 1981-01-13 Research Technology, Inc. Method and apparatus for cleaning film
US4279055A (en) * 1980-09-08 1981-07-21 Pes Photographic Equipment Service Inc. Film processing involving noxious substance removal
US4305540A (en) * 1979-09-06 1981-12-15 The Boeing Company Adhesive dispersing anvil and method of using
US5063413A (en) * 1990-07-31 1991-11-05 Xerox Corporation Removal of excess liquid from an image receptor
US5289639A (en) * 1992-07-10 1994-03-01 International Business Machines Corp. Fluid treatment apparatus and method
US5293663A (en) * 1991-10-15 1994-03-15 Food Industry Equipment International, Inc. Fluid cleaning system
US5398372A (en) * 1993-10-29 1995-03-21 Kaiser Aluminum & Chemical Corporation Liquid edge bead removal device
US5614264A (en) * 1995-08-11 1997-03-25 Atotech Usa, Inc. Fluid delivery apparatus and method
US5904773A (en) * 1995-08-11 1999-05-18 Atotech Usa, Inc. Fluid delivery apparatus
US6168663B1 (en) 1995-06-07 2001-01-02 Eamon P. McDonald Thin sheet handling system cross-reference to related applications
US6344106B1 (en) 2000-06-12 2002-02-05 International Business Machines Corporation Apparatus, and corresponding method, for chemically etching substrates

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2223699A (en) * 1988-08-25 1990-04-18 S G Owen An air knife
JPH0766176B2 (ja) * 1988-10-11 1995-07-19 富士写真フイルム株式会社 ハロゲン化銀カラー感光材料の処理方法
CN113755983B (zh) * 2021-08-27 2022-05-24 安徽旭之杰纺织科技有限公司 一种基于纱线生产用分段式纱线加热设备
CN116498983B (zh) * 2023-06-27 2023-08-29 山西毅诚科信科技有限公司 一种具备自清洁功能的耙式吹灰器

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040361A (en) * 1961-02-28 1962-06-26 Harlan L Baumbach Squeegee
US3750229A (en) * 1971-03-29 1973-08-07 Gen Tire & Rubber Co Apparatus for cleaning cured sponge rubber extrusion
US3778862A (en) * 1971-10-20 1973-12-18 Reynolds Metals Co Apparatus for removing treating liquids from treated metal strip products

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS44544Y1 (fr) * 1966-03-28 1969-01-10
JPS4321996Y1 (fr) * 1967-04-04 1968-09-16
JPS5045900Y2 (fr) * 1972-06-06 1975-12-25
JPS5082238U (fr) * 1973-12-01 1975-07-15
JPS5844373B2 (ja) * 1976-06-05 1983-10-03 アルビン ホワ−ド サツクス 血圧測定装置

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3040361A (en) * 1961-02-28 1962-06-26 Harlan L Baumbach Squeegee
US3750229A (en) * 1971-03-29 1973-08-07 Gen Tire & Rubber Co Apparatus for cleaning cured sponge rubber extrusion
US3778862A (en) * 1971-10-20 1973-12-18 Reynolds Metals Co Apparatus for removing treating liquids from treated metal strip products

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4244078A (en) * 1979-04-26 1981-01-13 Research Technology, Inc. Method and apparatus for cleaning film
US4305540A (en) * 1979-09-06 1981-12-15 The Boeing Company Adhesive dispersing anvil and method of using
US4279055A (en) * 1980-09-08 1981-07-21 Pes Photographic Equipment Service Inc. Film processing involving noxious substance removal
US5063413A (en) * 1990-07-31 1991-11-05 Xerox Corporation Removal of excess liquid from an image receptor
US5293663A (en) * 1991-10-15 1994-03-15 Food Industry Equipment International, Inc. Fluid cleaning system
US5289639A (en) * 1992-07-10 1994-03-01 International Business Machines Corp. Fluid treatment apparatus and method
US5398372A (en) * 1993-10-29 1995-03-21 Kaiser Aluminum & Chemical Corporation Liquid edge bead removal device
US6168663B1 (en) 1995-06-07 2001-01-02 Eamon P. McDonald Thin sheet handling system cross-reference to related applications
US5614264A (en) * 1995-08-11 1997-03-25 Atotech Usa, Inc. Fluid delivery apparatus and method
US5904773A (en) * 1995-08-11 1999-05-18 Atotech Usa, Inc. Fluid delivery apparatus
US6045874A (en) * 1995-08-11 2000-04-04 Atotech Usa, Inc. Fluid delivery method
US6344106B1 (en) 2000-06-12 2002-02-05 International Business Machines Corporation Apparatus, and corresponding method, for chemically etching substrates

Also Published As

Publication number Publication date
CA1121114A (fr) 1982-04-06
DE2927137A1 (de) 1980-02-07
GB2026667A (en) 1980-02-06
JPS5518698A (en) 1980-02-08
JPS574899B2 (fr) 1982-01-28
GB2026667B (en) 1982-12-08
DE2927137B2 (de) 1980-10-30

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